Grate.



D. F. STAYMAN.

GRATE.

APPLICATION FILED APR.11, 1912.

Patented Feb. 11, 1913.

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COLUMBIA PLANGGRAPH C0" WASHINIJTON, n. C,

i DAVID F. STAYMAN, OF PHILADELPHIA, PENNSYLVANIA.

GRATE.

To all whom t may concern Be it known that I, DAVID F. STAYMAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new .and useful Improvements in Grates, of which the following is a specification.

My invention relates to improvements in grates, and more particularly to shaking grates designed for furnaces, the object of the invention being to provide a grate consisting of a plurality of separate sections, all operated to shake simultaneously, and yet any capable of being removed and replaced without disturbing the others.

A further object is to provide a grate of this character which dispenses altogether with pivot bolts and the like, connecting t-he several bars or plates of the grate.

A further object is to provide an improved grate consisting of parallel supporting bars having V-shaped bearings for the grate sections, holding said sections against lateral movement, yet permitting their longitudinal movement in shaking.

A further object is to provide improved means for simultaneously operating the sections of the grate.

Vith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a plan view illustrating my improved grate. Fig. 2, is a view in longitudinal section on the line 2 2 of Fig. 1. Fig. 3, is a view in longitudinal section on the line 3 3 of Fig. 1. F ig. t, is a view in cross section on the line 1 -1 of Fig. 2. Fig. 5, is a view in sect-ion on the line 5 5 of Fig. 3. Fig. 6, is a view in section on the line 6 6 of Fig. 3. Fig. 7, is a perspective view of one of the supporting bars. Fig. 8, is an inverted perspective view of one of the grate end sections. Fig. 9, is a perspective view of one of the grate moving levers, and Fig. 10, is a similar view of one of the grate moving arms.

1, represents a furnace wall having a iange 2 thereon supporting a series of parallel bars 3, one of which is shown in perspective in Fig. 7. These bars 3 are formed at their ends with laterally projecting ex- Specicaton of Letters Patent.

Application filed April 11, 1912.

Patented Feb. 11,1913.

Serial No. 690,107.

tensions 5, which have an extended bearing on the flange 2, and prevent any tilting movement of the bar. Each of these bars supports a longitudinal series of grate sections 6 and 7, said sect-ions having longitudinal slots 8 therein through which the vash may be sifted. Each section 6 and 7 is provided on its under face with V-shaped lugs 9. These lugs 9 are located in V-shaped bearings 10 in the bars 3 beneath. While the sections 6 and 7 are of course supported upon the upper edges of the bars, t-hese V- shaped bearings prevent any lateral movement of the sections, and guide their longitudinal movement. The bearings 1() in the bars 3 are formed in Y-shaped integral blocks 11 and in extensions 5. These blocks 11 I term bearing blocks because they offer but slight resist-ance to the movement of the grate sections, yet hold the said sections in proper position.

The grate sections, at their ends, have lugs 12 of varying lengths which are in alinement, and which prevent the format-ion of a continuous opening across the grate in which a rake or other implement might readily be caught during the raking operation. rIhe sections are alike with the exception that the end sections have no lugs at one end. In other respects the sections are interchangeable, and when one section is. broken or burnt out, it may be readily replaced without disturbing the others. Each bar 3 is provided with recesses 13 which constitute bearings for journals 14. In all of these bearings 13, except one only, preferably at one end of the grate, the ournals 14 of arms 15 are mounted, while in the bearings of the other of said bars, the journals 14 of levers 16 are mounted.

The arms and levers are alike in construction with the exception that the levers have members extending below the journals which are pivotally connected by bolts 17 with a rod 18, and the latter extends through the front wall of the furnace and is connected to and operated by a lever 19. The journals 14 are of a length to iit the bearings 13, and at one end are provided with enlargements 20 which, together with the arms or levers as the case may be, will hold the journal against longitudinal movement in the bearings. The upper ends of the arms and levers are formed with curved enlargements 21, which project between parallel lugs 22 on the under face of the grate sections, so that when these arms and levers are oscillated, a .reciprocating motion will be imparted to the grate sections. All of the journals 14; are provided with angular openings 23 extending longitudinally therethrough, and as the arms and levers are in alinement, they are in position to receive the angular shafts 24 which compel all of the arms and levers to oscillate together. In other words, when the lever 19 is oscillated, it will, through the medium of rod 18, transmit an oscillating movement to all of the levers 16, and as these levers are connected by the angular shaft 24 with the arms 15, all of said arms will be oscillated simultaneously and in unison with the levers. This movement will cause the grate sections to reciprocate longitudinally and shake the ash through the slots therein.

As clearly seen in the drawings, the grate is shorter than the dimension of the tire box, so that it is ermitted the necessary amount of longitudinal movement to shake the same. If one of the sections is burnt or broken, it may be readily removed and replaced by another section without disturbing the entire grate, and any or all parts of the grate may be replaced at a reasonably low cost. It will further be noted that all pivotal connections are dispensed with, save only where the rod 18 connects with the levers, and if any of these pivot bolts are injured, they may be readily replaced. rI`he other parts of the grate which are subjected to intense heat, have only such bearings as will enable a free expansion and contraction, and furthermore the grate sections have such mounting on the supporting bars that they resist but slightly the shaking movement impartedl thereto. In other words, as far as possible I reduce friction to a minimum, yet provide a grate which is l e firm, and will perfectly support the hre.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of th-e appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A grate comprising a series of support- .ing bars, having longitudinal V-shaped bearings at their upper edges, said bearings located in a higher plane than the bars, grate sections having V-shaped lugs on their lower faces engaging the bearings on the v.bars, whereby the grate sections are spaced from the bars, and means for reciprocating l the grate sections longitudinally of the bars, substantially as described.

nal supporting bars having upwardly projecting blocks thereon with V-shaped recesses in their upper faces, grate sections supported on said blocks and movable longitudinally of the bars, said sections having V-shaped lugs thereon mounted in the re-.

cesses in the blocks, said bars having recesses therein, arms having journals in said recesses, said sections having lugs on their under faces between which the arms project, and means for oscillating the substantially as described.

4. A grate comprising parallel longitudinal supporting bars having upwardly projecting blocks thereon with longitudinal V- arms, n

shaped recesses in their upper faces, grate.

sections movable longitudinally upon said blocks and having V-shaped lugs on their lower faces mounted in the recesses in the blocks, said bars having recesses therein,

arms having journals in said recesses, said;

sections having lugs on their under faces between .which the arms project, said journals having angular openings therein, and angular shafts extended through the alined journals, whereby said arms are compelledto.

move in unison to move all of said grate sections longitudinally of said bars, substantially as described.

5. A grate comprising parallel longitudinal supporting bars having upwardly pro jecting blocks thereon with V-shaped recesses in their upper faces, grate sections supported on said v'blocks and movable longitudinally of the bars and having V-shaped lugs on their lower faces mounted in the re cesses in the blocks, said bars having recesses therein, arms having journals in said recesses, said sections having lugs on their under faces between which the arms project, said journals having angular openings-v therein, angular shaftsv extending through the alined journals, whereby said arms are compelled to move in unison, said arms on the end bars having extensions thereon constituting levers, a rod connecting the said:

levers, and a lever connected to and adapted to oscillate the levers and the arms, substantially as described.

6. A grate comprising parallel support-ing bars, slotted sections mounted to move longitudinally on said bars, said bars having recesses therein, journals in said recesses having flanges on the ends thereof, arms on the other ends of saidjournals engaging the grate sections, said journals having angular openings therethrough, angular shafts positioned in saidl openings7 and means for transmitting an oscillating movement to said shaft whereby said grate sections are simultaneously reciprocated longitudinally of the/bars, substantially as described.

7. A grate comprising a series of parallel longitudinal bars having Y-shaped blocks on their upper faces and integral therewith, grate sections movable longitudinally upon the blocks and having V-shaped lugs movable through the recesses in the blocks, and means for reciprocating the sections longitudinally of the bars, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DAVID F. STAYMAN.

Witnesses S. W. FOSTER, CHARLES E. Po'rrs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

